EP 0361810 A2 19900404 - Pulsed coulometric detection.
Title (en)
Pulsed coulometric detection.
Title (de)
Gepulste coulometrische Messung.
Title (fr)
Détection coulométrique pulsée.
Publication
Application
Priority
US 24901488 A 19880926
Abstract (en)
A variation of Pulse Coulometric Detection (PCD) is described in which the detection potential is scanned in a cyclic fashion during current integration to achieve automatic and virtual elimination of baseline drift caused by surface roughening and changes in pH. The technique is examined at a Au electrode for flow-injection determination of thiourea which is typical of numerous sulfur compounds whose anodic reactions are catalyzed by formation of surface oxide. The baseline decays quickly to a near-zero equilibrium value following start-up and is unchanged for a pH step of ca. 2 units. The technique is concluded to be compatible with pH-gradient chromatography.
IPC 1-7
IPC 8 full level
G01N 27/42 (2006.01); G01N 27/48 (2006.01)
CPC (source: EP US)
G01N 27/423 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0361810 A2 19900404; EP 0361810 A3 19920805; EP 0361810 B1 19941214; AT E115724 T1 19941215; AU 4173889 A 19900329; AU 610808 B2 19910523; CA 1300683 C 19920512; DE 68919973 D1 19950126; DE 68919973 T2 19950727; JP H02186256 A 19900720; US 4939924 A 19900710
DOCDB simple family (application)
EP 89309683 A 19890922; AT 89309683 T 19890922; AU 4173889 A 19890925; CA 613005 A 19890925; DE 68919973 T 19890922; JP 25039089 A 19890926; US 24901488 A 19880926